Rotary engine



Dec. 18 E923,

L47852 G. PAGoNls ROTARY ENGINE Filed dan. 3 Sheets-Sheet 1 Dec. i8 1923. L47852 G.v PAGoNls ROTARY ENGINE Filed Jan. l0. 1920 3 Sheets-Sheet 2 Dec. i8, 1923. )1,47352 .,G. PAGoNls ROTARY ENGINE Filed aan. 1o. 1920 s sne`ets-sheet 5 lill lllll 0 BV Y A TTOR/VEYS Patented Dec. 18, 1923.

UNET@ .STATS GEORGE PAGONIS, OIE' NEW YORK, N. Y.

ROTARY ENGINE.

Application filed January 10, 1920i Serial No. 350,639.

To all whom it may concern Be it known that I, GEORGE PAGONIS, a citizen of the United States, and a resident of the city of New York, borough of Manhattan, in the county and State of New York, have invented a new and Improved Rotary Engine, of which the following is a full, clear, and exact description.

This invention relates torotary engines or engines in which a rotary piston or rotor is caused to be rotated under the expansive force of steam, compressed air, or the like.

Among the objects of the invention is to provide a construction of the most simple and durable nature and one in which there is provided simple and eective means for reversing the direction of movement of the rotor.

With the foregoing and other objects in view the invention consists in the arrangement and combination of parts hereinafter described and claimed, and while the invention is not restricted to the exact details of construction disclosed or suggested herein,

,still for the purposefof illustrating a practical embodiment thereof reference is had to the accompanying drawings, in which like reference characters designate the same parts in the several views, and in which- Figure 1 is a front elevation of the main portion of the machine with parts in section on the broken line 1-1 of Fig. 5.

Fig. 2 is a vertical sectional detail on the plane corresponding to the line 2-2 of Fig. 5, but with the slide valve in elevated` position.

Fig. 3 is a similar view with the slide valve in depressed position and with the valve actuator shifted. y

Fig. 4 is a horizontal sectional detail on the line 4-4 of Fig. 2.

Fig. 5 is a vertical longitudinal section on the line 5-5 of Fig. 1. y

Fig. 6 is an inside vertical view of the left half of the casing and with the rotor indicated therein. l

Fig. 7 is a vertical transverse sectional detail on the line 7 7 of Fig. 5.

Fig. 8 is a vertical sectional detail on the line 8-8 of Fig. 5. y

Referring now more specifically to the drawings I show a stator or casing comprising two mating parts 10 and 11 having aligned bearing holes 12 for the shaft 13 upon which the rotor is mounted or with which it is made integral. The rotor comprises a central disk or web 14 and a pair of diametrically opposite pistons 15, shown inthe form of disks arranged radially of the rotor and lying in planes meeting or coinciding with the axis of the shaft 13. In other words the casing for the disk shaped space at the center comprises what may be termed an annular cylinder, each portion of which is circular in cross section. The two parts of the casing may be secured together by any suitable means such as detachable fasteners 16 passing through marginal flat flanges 17.

Any suitable means may be provided to introduce the expansive motive or power Huid into the casing for action upon the rotor pistonsor blades 15 and to control the exhausts of the same from the casing. Co-operating with the casing member 11 are one or more valve casings 18 in each of which is arranged a slide valve 19 having a stem 2O leadin inward radially toward the shaft 13. s shown in Fig. .6 I provide from each valve casing four ports 21, 22, 23 and 24. The ports 21 and 23 are inlets, while the ports 22 and 24 are outlets. Also the ports 21 and 22 are arranged at the same distance from the axis of the shaft and are adapted to be opened simultaneously as a result of the movement of the slide valve 19. Likewise the two ports 23 and 24 are to be opened simultaneously at the outward movement of the slide valve.'(See Figs. 2 and 3). The ports 21 and 22 may be regarded as a pair and also the valves 23 and 24. The ports of each pair are spaced circumferentially on opposite sides of a groove or seat 25 formed in the casing member 11 for the accommodation of an abutment lmember 26 slidable through a channel 27 formed in the casing member 10 parallel to the shaft 13.

The means for controlling the position or operation of the abutments 26 includes for each a stem 28 extending beyond the channel 27 parallel tothe shaft 13 and having pin and slot connection at 29 with a lever 30 pivoted at 31 upon an arm 32. A circular cam 33 is fixed upon the shaft 13 and includes a plurality of projections 33 each in turn operating upon the inner end of the lever 30 and'causing the abutment pertaining` thereto to move outward along the channel 27 out of the path of the rotor blades 15 and against the force of any suitably arranged means such as a 'spring 34 adapted to automatically cause or tend to cause the abutmentto be seated in the sea-t 25 between the ports of each pair. rlhus at eaclrrotation of the shaft each abutment will be moved outward twice, or once for each rotor blade 15. The throw of each cam 33Y is so timed as to withdraw the abutment just atY the time a blade is passing .a seat 25 and then the spring returns the abutment again to its closed position.

rl`he valve actuator 35 is splined to the shaft 13 so as to rotate therewith, but adapted to slide thereon so as to occupy either the the position shown in Fig. 5 or any position slightly to the left thereof. The actuator 35is of a generally vcylindrical form but provided with three surface characteristics as follows: a concentric groove 36 for the yoke 37 of a bell crank lever 38 pivoted at 39, and two camV features 40 and 41. The cams 40 are vin the vnature Aof projections two in number diametrically opposed. (See Figs. 1 and 2). The other caml features 41 are depressed and likewise diametrically opposed to each other.

Each of the valve stems is provided preferably on its inner end with an antiv friction roller. 42 which rides upon either cam feature 40 or 41 of the actuator. The bell crank lever 38V constitutes a holder or adjuster vfor the actuator and operates in a slot 43' formed in a bracket 44 extending forward and upwardfrom a standard 45 fixed to the Vbase 46 of the engine. TheI front end of the rotor shaft 13 is journaled inY a bearing 44 at the upper end of the bracket 44. A tooth 47 projecting into the slot'43 serves to hold the lever 38 either up in the position shown in Figs. 5 and 7 ywith the valve actuator in position so that the projections 40 Yco-operate` with the yrollers 42, or else down in the position of the dot and dash lines of Fig. 5 in which the depressed portion 41 of the actuator is in the plane of the rollers 42. The lever 38 is preferably designed so that by its own elasticity it will remain in the position shown in Fig. 7 so that for it to be shifted the' operator must spring the lever out of the notch to release it from the tooth 47.

A spring 48 surrounds each valve stem 2O and serves vto hold the roller 42 in constant contact with the actuator. Since the major portion of the pathk of each roller 42 with respect to the actuator surface is circular the valve .19 is held most ofthe time in its mid position as shown inrFig. 5 closing all ofthe ports. When the valve is moved outwardby a cam,4() the pair of ports 23 and 24 are opened .mementarily, one port of eachlpair, as `.21er 23 maybe regarded as., lthe inlet kpo'rtl while the .other port of eachpair as '22 or 2,4 would be the exhaust: p Qrt.. The PQFS 21 and; .23 may be in communication with` the same source of motive fluid such asa pipe 49 common to all of the slide valves and likewise the exhaust ports 22 and 24 may have a common outlet 50. A Y

While I'show a plurality of valve casings Y1S a specilic description of construction and briefly summarized as follows in view of thev foregoing specific description of the mecha n1sm,`assuming that the port 21 is an inlet port and the slide valve 19 is down as shown in Fig. 3 uncovering the pair of ports 21 and 22 momentarily'. The abutment 26 between these ports will be seated at this time and so the rotor will be moved inra counter clockwise direction as `shown in Fig. 6. The motive fluid being admitted between the moving vblade' 15 and thevabutment the previously. admitted fluid ahead ofthe blade 15 will beexhausted through the port 22 of the .next valve casing. By the time the blade15 reaches the vseat 25 ,of the next succeeding abutment such abutment will have been withdrawn by reason of the actuation of the cam 33 and so on continuously throughout all ofthe'valve systems. The operation being` e'ected through the ports 21 and 22 while the other pair of ports will be kept closed while. the engine is operated in this same direction. ,'To reverse the direction of rotation of the rotor theflever 33 is actuated to shift the actuator 35 bringing the projections 40 into action as shown in Fig. 2 at which time the other pair of ports 23 and 24 will be .made active, Ybut since the inlet port 23 isv on the opposite side of the valve casing, circumferentially, fromV the inlet port 21 the motive uid will be caused to actin the oppositedirection from the same abutment and hence reverse the engine.

This reversing action `may be accomplished easily without much effort and 'without pre-k viously stoppinlg the operation of the machine.

I claim:

l. A rotary engine, comprising a casing having a'central disk-shaped cavity,`an annular chamber into whichV leads the said cavity and at one side three radial channels open at their outer end having their inner ends opening into the annular chamber, the

llO

said chamber having in its side opposite the i channels grooves7 a shaft mounted in the casing and projecting from each side thereof, a rotor comprising a disk-shaped member andi two oppositely arranged piston blades, said rotor being; mounted on the' shaft with. its vdisk-,shaped member working in the saidt cavityfand its blades in the an#V nular., chamber, reciprocating abutment's kin the channels andad'aptedfto be seated in the grooves'y of theaall'lul'ar chamber, means :for reciprocating 'the abutments from one end of the shaft7 a plurality of valves on the side of the casing opposite the channels, each valve havinlg tvvo inlet and two exhaust ports leading into the annular chamber, an inlet and exhaust port being on each side of a groove thereof, and means for operatingf the valves from the other end of the sha t.

2. A rotary engine comprising a easing having a central cavity, an annular Chamber into which leads the cavity, and at one side radial channels leading from the chamber and having open outer ends, the said chamber having grooves in the sides kopposite the Channels, a shaft mounted in the casin'g, a rotor mounted on the shaft and havin piston blades Working in the chamber, va ves on the sides of the casing opposite oted and spring pressed levers mounted on the casing, each lever being pivoted intermediate of its ends and having one end forked and slotted to straddle a stein of an abutment and engage the pin thereof, and a cam on the shaft and with which the other ends of said levers engage.

GEORGE PAGONIS. 

